X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from poplet2.per.eftel.com ([203.24.100.45] verified) by logan.com (CommuniGate Pro SMTP 5.2.16) with ESMTP id 3871575 for flyrotary@lancaironline.net; Thu, 01 Oct 2009 16:53:17 -0400 Received-SPF: none receiver=logan.com; client-ip=203.24.100.45; envelope-from=lendich@aanet.com.au Received: from sv1-1.aanet.com.au (sv1-1.per.aanet.com.au [203.24.100.68]) by poplet2.per.eftel.com (Postfix) with ESMTP id EB7921736EF for ; Fri, 2 Oct 2009 04:52:38 +0800 (WST) Received: from ownerf1fc517b8 (203.171.92.134.static.rev.aanet.com.au [203.171.92.134]) by sv1-1.aanet.com.au (Postfix) with SMTP id 39138BEC01F for ; Fri, 2 Oct 2009 04:52:38 +0800 (WST) Message-ID: <6CEA9E388DFE43A4991A295523168163@ownerf1fc517b8> From: "George Lendich" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Activity Date: Fri, 2 Oct 2009 06:52:41 +1000 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0037_01CA432C.EF9C2450" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.5843 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5579 X-Antivirus: avast! (VPS 090930-0, 09/30/2009), Outbound message X-Antivirus-Status: Clean This is a multi-part message in MIME format. ------=_NextPart_000_0037_01CA432C.EF9C2450 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Bobby, I've seen between 3 to 3.5 cu" per HP, I guess that depends of how well = the cooling is set-up, 800 cu" of Radiator should do fine for 250hp. If your previous exchanger was 650 cu" for 250 hp it was undersized. I = guessdamated that size form the info you previously provided. George (down under) George, I have 800 cu in of water to air exchangers. No oil to air exchanger. = At 6800 rpm \ 38" MP I'm producing close to 250 hp. But 15 hp is used to = drive the SC. So about 3.2 cu in per HP. The new openings are about 72 = sq in. The goal is to lower the water temps from 200F to 185F with an = OAT of 100F. Oil is running 20F hotter than water. With the 21% ratio I = was only able to maintain 185 HP and keep the oil temps below 220F \ OAT = 95F. It all an experiment.=20 Bobby -------------------------------------------------------------------------= ----- From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] = On Behalf Of George Lendich Sent: Wednesday, September 30, 2009 7:31 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Activity Bobby, What is your expected HP. How does 26% of core face equate to 3 cu" for every HP i.e. 200 hp =3D 600 cu" George (down under) With any luck I will be back in the air this weekend. I made several = changes including opening my inlets from 21% to 26% of my core face. Of = course it's no longer 105F so will have to extrapolate the data. Other = changes include relocating the battery back to the stock location, = removing 13lbs of tail ballets, new exhaust manifold and belly mount = muffler, CO Detector, exhaust heat for cabin, O2 system, autopilot, 230 = psi water spray for radiator and manifold injection (yet to be tested), = re-plumb the oil to water exchanger and a fresh pilot bi-annual today.=20 Bobby -------------------------------------------------------------------------= --- Anyone out there ??.....................<:) ------=_NextPart_000_0037_01CA432C.EF9C2450 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
 Bobby,
I've seen between 3 to 3.5 cu" per = HP, I guess=20 that depends of how well the cooling is set-up, 800 cu" of Radiator = should do=20 fine for 250hp.
If your previous exchanger was 650 cu" = for 250 hp=20 it was undersized. I guessdamated that size form the info you previously = provided.
 
George (down under)
George,
 
I have 800 cu in of water to air exchangers. = No oil to=20 air exchanger. At 6800 rpm \ 38" MP I'm producing close to 250 hp. But = 15 hp=20 is used to drive the SC. So about 3.2 cu in per HP. The new openings = are about=20 72 sq in. The goal is to lower the water temps from 200F to 185F with = an OAT=20 of 100F. Oil is running 20F hotter than water. With the 21% ratio I = was only=20 able to maintain 185 HP and keep the oil temps below 220F \ OAT 95F. = It all an=20 experiment.
 
Bobby

From: Rotary motors in aircraft=20 [mailto:flyrotary@lancaironline.net] On Behalf Of George=20 Lendich
Sent: Wednesday, September 30, 2009 7:31 = PM
To:=20 Rotary motors in aircraft
Subject: [FlyRotary] Re:=20 Activity

 Bobby,
What is your expected = HP.
How does 26% of core face equate to 3 = cu" for=20 every HP
 i.e. 200 hp =3D 600 = cu"
George (down under)
With any luck I will be back in the air = this weekend. I=20 made several changes including opening my inlets from 21% to 26% of = my core=20 face. Of course it's no longer 105F so will have to extrapolate the = data.=20 Other changes include relocating the battery back to the stock = location,=20 removing 13lbs of tail ballets, new exhaust manifold and belly mount = muffler, CO Detector, exhaust heat for cabin, O2 system, autopilot, = 230 psi=20 water spray for radiator and manifold injection (yet to be tested), = re-plumb=20 the oil to water exchanger and a fresh pilot bi-annual=20 today. 
 
Bobby


Anyone out there ??.....................<:)
 
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